Get the good night's rest you deserve with NOW Foods Extra Strength Melatonin. A hormone released by the pineal gland, melatonin helps regulate the body's circadian rhythm--your sleep-wake cycle. In addition, melatonin is a free-radical scavenger found in high amounts in the GI tract where it promotes healthy cells and immune health. Each 1-veggie cap serving delivers a potent 10 mg of melatonin.